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Around the turn of the century, most plesiosaur research was done by a former student of Marsh, Professor Samuel Wendell Williston. In 1914, Williston published his Water reptiles of the past and present. [34] Despite treating sea reptiles in general, it would for many years remain the most extensive general text on plesiosaurs. [35]
Since 1959, a second enigmatic group of ancient sea reptiles is known, the Hupehsuchia. Like the Ichthyopterygia, the Hupehsuchia have pointed snouts and show polydactyly, the possession of more than five fingers or toes. Their limbs more resemble those of land animals, making them appear as a transitional form between these and ichthyosaurs.
Plesiosaurus gave live birth to live young in the water like most sea snakes. The young might have lived in estuaries before moving out into the open ocean. It has been postulated that the long neck of Plesiosaurus would have been a hindrance when trying to speed up, any bend in the neck creating turbulences. [ 22 ]
The remarkably well-preserved skull of a gigantic pliosaur, a prehistoric sea monster, has been discovered on a beach in the county of Dorset in southern England, and it could reveal secrets about ...
Years later, she discovered the fossilized skeleton of another prehistoric sea creature, the plesiosaur. Dolnick describes how eagerly museums displayed the fossils Anning found, but left her name ...
List of Asian dinosaurs; List of Australian and Antarctic dinosaurs; List of dinosaurs and other Mesozoic reptiles of New Zealand; List of European dinosaurs; List of Indian and Madagascan dinosaurs; List of North American dinosaurs. List of Appalachian dinosaurs; List of archosaurs of the Chinle Formation; List of dinosaurs of the Morrison ...
Paleontologists have solved a prehistoric cold case, piecing together how a sea cow, a manatee-like creature, met an especially violent end some 15 million years ago. Bite marks on the unusual ...
Pages in category "Prehistoric marine animals" The following 38 pages are in this category, out of 38 total. This list may not reflect recent changes. .